Comment out a method I don't know how to implement yet.
Use 1.0.0 as gstreamer version from Collabora 1.0 port attempt
Removed gstreamer interfaces library reference, as it doesn't exist in 1.0
Remove GstImplementsInterface related code as interfaces were removed
Update several enums to match new constants in gstreamer 1.0

Also George Kiagiadakis's enum assert testing was really helpful
for finding those enum changes.